Window-frame.



A. FROMHOLD.

WINDOW FRAME. APPLIATIoNlILED JAN.4, 1909.

Patented Deo.2l4, 1912.

Myx:

- To all whom it concern:

A UNITED sTATEs PATENT oEEicE.

ALEXANDER FROMHOLD, OF RUTHERFORD, NEW JERSEY, ASSIGNOR T0 FRANK- VOIGT- MANN AND S. -HARRIS POMEROY, DOING BUSINESS UNDER NAME OF VOIGT'MANN @c COMPANY, OF NEW YORK, N. Y.

WINDOW-FRAME.

Specification of Letters latent.

Patented Dec. 24, 191,2.

Be it known that I, ALEXANDER FROM- HOLD, a citizen of the United States, residing at Rutherford, in the county of Bergen and State of New Jersey, have invented certainv new and useful Improvements in Window-Frames, of which the following is a speciication. i

This invention relates to the artvof sheet metal window frames, and pertains more y especially to that class of sheet metalI frames employin hollow side frame members or stiles -ma e from suitably bent sheet metal.

The main obj-ect of the invention is `.to provide a construction that shall be strong and durable and adapted for use especially as a fire proof window frame to firmly hold the glass pane in position against the action of water forced against the window pane.

Another object of the invention is to provide a metal sash the body of which will not be liable to distortion or twisting under the action ofheat. v

`A still further object of the invention is to Aprovide an improved vmeans for facilitating the insertion of the ane and for. securely binding the latter an the frame together.

Other minor objects andadvantag'es Vwill appear in connection' with the'following de- .i

scription'n of the preferred embodiment of the invention as represented in the accompanying drawings, in which latter-- Figure 1 is a rspective view of a section of my improve window frame; and Fig. 2 is an enlarged cross section through one of the side frames thereof.

Referring tothe drawings, 3 re resents vas an entirety the side sections o the sash frame, that -are preferably formed from a single piece of sheet metal so bent as to provide an outer bearing surface 4 adapted to engage the window casing and having an anchoring portion 5 for engagement with a bead or rib on the window casing t-o hold the latter and said side frames together.

The bearing surface 4 is preferably" formed with an integral over-lapped section 6 which permits a slightv transverse stretching of the bearing surface underthe action of heat or other strains without destroying the sash. From the bearingsurfaee 4 the sides 7 of the sash are extended, being bent 'approximately at right angles to the bearing surface, and at their inner portions being bent toward each other as shown at 8 and 8, `and thence inwardly forming flat glass engaging strips 9. These strips 9 are preferably convergent toward their free edges,'so as to providespring binding members ada ted to engage and clamp the glass. In or er to strengthen and make more .rigid the side sections I provide an integral linternal reinforcing member 10 adapted' to bear against the inner surfaces of the base 4, sides 7 and inclined ortions 8 and 8, the 'ree edges of .said rein orcing member abutting against the bases of the glass engaging stri s 9. This strengthening member l0 pre erably consists of a stifil channel shaped piece of steel or d ther elastic material. In

the preferredv construction the portion 8" of one of the sides of the sash frame is slightly curved transversely, as best shown in Fig. 2, the reinforcing strip bearing against the concaved portion of saidside member 8a.

The hollow intermediate cross bar 1l is secured to and between the side frame members and is provided with a vgroove 12 in which one edge of the glass pane 413 is adapted to be seated. The preferred manner of securing the1 cross bar tothe side k'frame .members kis `by. soldering fone side of said. cross bar thereto and leaving a free engagement at the opposite side, whereby one side of the cross bar land `the sides of the side frame members engaged thereby may be drawn tightly together by means of the screws -14 connecting the two sides of the cross bar. In the construction herein shown theside frame members and cross bar represent a its entirety. It is, however, to be noted that y the upper edge 15 of one side of the cross bar is slightly lower than the corresponding edge 16 of the other side, whereby, when the metallic frame is assembled, the glass may be inserted' within the groove 12 without requiring the adjustment of one of said cross bars, it being necessary only to loosen the main screws 17 which connect the opposite sides of each side frame sufficiently t0 spread the strips` 9 for the introduction of the glass, whereupon the latter may be read-- ily inserted between the side frames and cross bars, and then by tightening the screws 17 the strips 9 will be tightly drawn against the glass for the purpose hereinbeiore mentioned. The method, however, of securing the glass before or after the sash is assembled is immaterial and constitutes no part of this invention.

Without confining myself to the exact details .of structure herein shown and described, I claim:

A metal window sash having a hollow 4 side frame member formed integral of sheet and a reinforcing linlng of s eet metal for the hollow side frame having intimate contact with the walls of said side frame and having its ends labutting e'dgewise against the strips at the bases thereof and adjacent the edge of the window pane to be supported 'to thereby prevent spreading of the strips at the base thereof.

ALEXANDER FROMHOLD. Witnesses:

LOUGHLIN J. RICE,

LoRING WASHBURN. 

